Summary: Revises the purchased gas adjustments in multiple schedules of Tariff WN U-29 to pass through changes in the estimated cost of natural gas, and changes in the amortization rate(s) of deferred natural gas costs. Proposed rates increase annual revenue by approximately $13.7 million (9.2 percent). If proposed rates are granted the average residential customer using 68 therms per month will see a bill increase of $5.44 per month.